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Lawrence Water Works

EPA monitoring tested this supplier for 102 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
20
detected
89,143
people served
3
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Surface water
Ownership
Local government
Counties served
Essex

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
277
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Archived 2016-07-01 → 2016-12-31
TT Health-based Archived 2007-11-01 → 2007-11-30
TT Health-based Archived 2007-10-01 → 2007-10-31
MR Monitoring Addressed 2020-06-01
MR Monitoring Archived 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2013-07-01 → 2013-09-30
MR Monitoring Resolved 2013-07-01 → 2013-09-30
MR Monitoring Resolved 2013-07-01 → 2013-09-30
MR Monitoring Resolved 2013-07-01 → 2013-09-30
MR Monitoring Resolved 2013-07-01 → 2013-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0031 µg/L 1/4 2024
Pfpea 0.0030 µg/L 1/4 2024

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
97.85 µg/L 122%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 120 µg/L
244/244 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
52.865 µg/L 88%
of the EPA limit 60 µg/L
worst single sample: 85 µg/L
244/244 SYR4 2012–2019
Bromodichloromethane
20.54 µg/L
No EPA limit set
worst single sample: 24.2 µg/L
184/184 SYR4 2014–2019
Chloroform
85.655 µg/L
No EPA limit set
worst single sample: 110 µg/L
184/184 SYR4 2014–2019
Dichloroacetic Acid
20.085 µg/L
No EPA limit set
worst single sample: 29 µg/L
184/184 SYR4 2014–2019
Trichloroacetic Acid
28.7 µg/L
No EPA limit set
worst single sample: 49 µg/L
184/184 SYR4 2014–2019
Dibromochloromethane
7.6 µg/L
No EPA limit set
worst single sample: 11.3 µg/L
171/184 SYR4 2014–2019
Chlorite
85 µg/L 8.5%
of the EPA limit 1000 µg/L
worst single sample: 770 µg/L
150/255 SYR4 2012–2019
Monochloroacetic Acid
4.2 µg/L
No EPA limit set
worst single sample: 6.6 µg/L
129/184 SYR4 2014–2019
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
worst single sample: 1.8 µg/L
26/192 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2025
Monobromoacetic Acid
1.76 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
17/184 SYR4 2014–2019
Nitrate
570 µg/L 5.7%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Bromoform
1.6 µg/L
No EPA limit set
 9/184 SYR4 2014–2019
Barium
11 µg/L 0.5%
of the EPA limit 2000 µg/L
 7/7 SYR4 2012–2019
Fluoride
998 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1010 µg/L
7/7 SYR4 2012–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 1/7 SYR4 2012–2019
Pentachlorophenol
0.0900 µg/L 9%
of the EPA limit 1 µg/L
 1/6 SYR4 2013–2019
82 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WILLIAM C HALE
Phone
9786203110
Email
[email protected]

Frequently asked questions about Lawrence Water Works

Is Lawrence Water Works tap water safe to drink?

EPA monitoring detected 20 contaminants in Lawrence Water Works's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Lawrence Water Works's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Lawrence Water Works serve?

Lawrence Water Works reports serving 89,143 people in Massachusetts, per its EPA record.

Has Lawrence Water Works had any water quality violations?

The EPA has 277 violations on file for Lawrence Water Works, of which 3 are health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.